A federal judge ruled Wednesday that two provisions of the USA Patriot Act are unconstitutional because they allow search warrants to be issued without a showing of probable cause.

We'll see what the Court of Appeals says.

There's a lot you can do to limit your emissions while driving. Control your speed, get a fuel efficient vehicle, even carpool. But no matter what you do, you can't reduce your emissions to zero.

For a few dollars a year you can purchase "carbon offsets" for the emissions you can't reduce directly, just like Google does.

I use terrapass, but I'm sure there are other organizations out there.

Interested in an energy-efficient auto? You're in luck. That's because nearly every major car company has a hybrid line, or has plans to introduce one soon.

But enter the showroom, and instead of seeing green, you may be seeing red. Many of the market's hybrids—cars which combine gasoline engines with battery-powered electric motors—forsake fuel-efficiency in the name of power and performance.

Mild-hybrids may not save you money at the pump, but they are a little nicer on the environment.

Nice ad, but I ain't giving up meat just yet.

On 405… You don't see a lot of them around.